// L2TPNS Clustering Stuff
-// $Id: cluster.h,v 1.2 2004/03/05 00:09:03 fred_nerk Exp $
+// $Id: cluster.h,v 1.14 2005/07/31 10:04:10 bodea Exp $
-#define C_HELLO 1
-#define C_HELLO_RESPONSE 2
+#ifndef __CLUSTER_H__
+#define __CLUSTER_H__
+
+
+#define C_HEARTBEAT 1
+#define C_ACK 2
#define C_PING 3
-#define C_TUNNEL 4
-#define C_SESSION 5
+#define C_TUNNEL 4 // Tunnel structure.
+#define C_SESSION 5 // Session structure.
#define C_GOODBYE 6
+#define C_LASTSEEN 7 // Tell master the last heartbeat that I handled.
+#define C_KILL 8 // Tell a slave to die.
+#define C_FORWARD 9 // Forwarded packet..
+#define C_BYTES 10 // Update byte counters.
+#define C_THROTTLE 11 // A packet for the master to throttle. (The TBF tells direction).
+#define C_CSESSION 12 // Compressed session structure.
+#define C_CTUNNEL 13 // Compressed tunnel structure.
+#define C_GARDEN 14 // Gardened packet
+#define C_MASTER 15 // Tell a slave the address of the master.
+#define C_FORWARD_DAE 16 // A DAE packet for the master to handle
+
+#define HB_VERSION 5 // Protocol version number..
+#define HB_MAX_SEQ (1<<30) // Maximum sequence number. (MUST BE A POWER OF 2!)
+#define HB_HISTORY_SIZE 64 // How many old heartbeats we remember?? (Must be a factor of HB_MAX_SEQ)
+
+#define PING_INTERVAL 5 // 0.5 seconds. Needs to be short to keep session tables fresh.
+#define HB_TIMEOUT (15*2*PING_INTERVAL) // 15 seconds without heartbeat triggers an election..
#define CLUSTERPORT 32792
-#define CLUSTERCLIENTPORT 32793
-#define UDP 17
-#define TIMEOUT 20
-#define IL sizeof(int)
-
-int cluster_init(uint32_t bind_address, int server);
-int cluster_send_message(unsigned long ip_address, uint32_t vip, char type, void *data, int datalen);
-int processcluster(char *buf, int l);
+#define CLUSTER_MAX_SIZE 32 // No more than 32 machines in a cluster!
+
+#define DEFAULT_MCAST_ADDR "239.192.13.13" // Need an assigned number!
+#define DEFAULT_MCAST_INTERFACE "eth0"
+
+typedef struct {
+ uint32_t version; // protocol version.
+ uint32_t seq; // Sequence number for this heatbeat.
+ uint32_t basetime; // What time I started
+ uint32_t clusterid; // Id for this cluster?
+
+ uint32_t highsession; // Id of the highest in-use session.
+ uint32_t freesession; // Id of the first free session.
+ uint32_t hightunnel; // Id of the highest used tunnel.
+ uint32_t size_sess; // Size of the session structure.
+
+ uint32_t size_tunn; // size of the tunnel structure.
+ uint32_t interval; // ping/heartbeat interval
+ uint32_t timeout; // heartbeat timeout
+
+ uint64_t table_version; // # state changes processed by cluster
+
+ char reserved[128 - 13*sizeof(uint32_t)]; // Pad out to 128 bytes.
+} heartt;
+
+typedef struct { /* Used to update byte counters on the */
+ /* master. */
+ uint32_t sid;
+ uint32_t pin;
+ uint32_t pout;
+ uint32_t cin;
+ uint32_t cout;
+} bytest;
+
+typedef struct {
+ in_addr_t addr; // peer address
+ uint32_t ver; // version of structure.
+ uint32_t undef; // Number of undefined structures. 0 if up-to-date.
+ uint32_t basetime; // start time of this peer.
+} pingt;
+
+int cluster_init(void);
+int processcluster(uint8_t *buf, int size, in_addr_t addr);
+int cluster_send_session(int sid);
+int cluster_send_tunnel(int tid);
+int master_forward_packet(uint8_t *data, int size, in_addr_t addr, int port);
+int master_forward_dae_packet(uint8_t *data, int size, in_addr_t addr, int port);
+int master_throttle_packet(int tid, uint8_t *data, int size);
+int master_garden_packet(sessionidt s, uint8_t *data, int size);
+void master_update_counts(void);
+void cluster_send_ping(time_t basetime);
+void cluster_heartbeat(void);
+void cluster_check_master(void);
+void cluster_check_slaves(void);
+int cmd_show_cluster(struct cli_def *cli, char *command, char **argv, int argc);
+
+#endif /* __CLUSTER_H__ */
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